Automatic Transmission Cooler problems of the 2007 Nissan Frontier

While driving on the highway on 7/13/2019 I felt my truck jerking/tugging which has never happened before. On 7/14/2019 the 'service engine' light came on and the jerking was more noticeable, I made an appointment with the local Nissan dealer for service on 7/16/2019 and I was told that there is coolant mixed in with the transmission and the tcm eventually fried since it is housed inside the transmission, apparently the transmission cooling hoses route to the radiator and the only remedy is to replace the transmission and the radiator. I searched online and found that I am not the only one that this has happened to. The problem.

Nhtsa action number 12004. This week my 2007 Nissan Frontier's transmission failed at roughly 62,000 miles. I had the vehicle towed to my nearest Nissan dealer where they informed me that it failed due to a leak in the cooling system causing coolant to leak into the transmission causing the failure. They also informed me that this has been such a problem that Nissan "extended the warranty" to help fix the problem. The only issue is that the deductible for the "warranty" is $3,000! that does not seem like much of a warranty to me. I feel like Nissan has admitted the problem and is trying to avoid a recall by issuing the extended warranty with a deductible that is most likely covering a majority of the cost of the job if not entirely. Since this investigation is still open I thought it only appropriate to contribute.

The transmission line runs through the radiator in these vehicles. It broke inside radiator and put transmission fluid into cooling system and coolant into transmission, causing failure of both systems. When problem was detected(service engine light came on and transmission slipping) I took to mechanic, we flushed transmission and cooling system. Transmission is systematically failing ,.

Transmission failed due to coolant intermixing with transmission fluid. This is the second time this vehicle has had catastrophic transmission failure due to a crack in the cooling system. First time was just over the warranty so I was forced to pay a $2500 copay. The vihicle started showing signs of a secondary failure just prior to 100000 miles and when I brought it to the dealer they lied to me and said there was just residual oil in the radiator from the first failure. . . Now I am past any warranty copay and the transmission is failing at just 100500 miles. That is just two years (less than 18000 miles) after they replaced the radiator and transmission. This is unacceptable that consumers are being forced to pay for a known issue of poor engineering especially when it was supposedly fixed by the dealer with Nissan parts. They have obviously not fixed the problem but just replaced with another defective part. On top of that they denied there was a problem to so I would continue to drive the vehicle until it was past the extended warranty (from 2012 class action lawsuit). While there was no accident in either indecent there was a near collision the first time as I was in the middle of a busy intersection and the second there was traffic behind me that had to avoid rear-ending me as the vehicle stopped, this is a dangerous defect that could result in injury or death.

When the truck transmission shifted into 5th gear there was a grinding noise in the transmission. This problem has been repccuring and getting worse. The nissian dealer verified it is due to contaminated transmission fluid due to a leak in the cooling radiator.

I purchased a 2007 Nissan Frontier in 2013, and just prior to reaching 109,178 my transmission started slipping badly so I took it to my local mechanic and he discovered that my "sealed" transmission was missing two quarts of oil and there were no signs of leaking on the external portion of the transmission. He replaced the missing oil and after a week of driving the transmission was slipping again. He checked the oil level and again it was quart low and slipping badly. It was then I started researching Nissan transmission problems and discovered that what I was experiencing was a well known (by Nissan) problem with their transmissions. Now at 109,275 miles the transmission has completely failed and it all could have been prevented had Nissan fixed the well known problem before they sold the vehicle to me. Funny the salesman that sold the truck to me suggested that I purchase a "power-train" warranty "just in case" because it was 4wd, I find that very ironic. I purchased the warranty and now I am being told that the repair cost for the blown transmission may not be covered because the transmission cooling radiator is the cause of the failure. I feel that Nissan is fully responsible for whatever the cost is to fix the transmission because of their negligence in failing to fix the problem prior to the truck being resold.

The transmission cooling unit in the radiator leaked. My coolant system became a brown sludge due to having transmission fluid leak into it. My transmission fluid had coolant leak into it and transmission is damaged.

The transmission had been shuttering and slipping for a couple of months. It was getting worse so I took it to kings transmission on 3-13-14 to have it looked at. They discovered water in the fluid and informed me that this model of vehicle had a wide spread problem with the radiator failing and leaking coolant into the transmission cooling lines. The truck is now at a Nissan dealer getting a new transmission and radiator.

Transmission failed while driving in very busy traffic. Maximum 20 mph, while everybody else was driving 55+ mph. Transmission failed without warning leaving my son and I scared to death- if I had been merging into interstate traffic we would have been run over, maybe even killed. Nissan refuses to acknowledge issue with the radiator/transmission fluid cooling system. I hope nobody dies as a result of the defect or the situation it can put an unknowing driver in.